Use the following MO diagram for Bez2, Be2*, and Be2. Be, Be, Be, + - n2p 12p - 什2s 02s szo年 Based on this diagram, Be,* and Be2 are both more stable than Be2. Be, is more stable than Be2, and Be, is more stable than Be*. Be,* is more stable than Be2, and Be, is more stable than Be,. Be, is more stable than either Be, or Be,.

CH3CH=CH 1. NaBH4 H 2. EtOH Draw the molecule on the canvas by choosing buttons from the Tools (for bonds), Atoms, and Advanced Template toolbars. The single bond is active by default. 1. H± 120 EXP. CONT. Δ Marvin JS by ChemAxon Submit Request Answer H с CI Br I O Z OSPF

A solution is 0.026 MMn(OH)7. What is the pOH to 2 decimal places? Hint: For scientific notation such as 1.23 x 10-4 enter is as 1.23 E-4

Which of the below is the correct bond-line structure for CH3CHBrCH2CH2C(CH3)CH2?

Which of the highlighted chemical bonds in the molecules below is longest? Shortest? In between? Which highlighted bond requires the highest energy to break? Lowest? In between? Answer these questions by completing the second and third columns in the table. compound H-C=N-H I H H H | | H-C-N-H I H H-CEN: length of highlighted bond choose one - choose one - choose one energy of highlighted bond choose one - choose one - V - choose one X 3

2. Determine the absolute configuration (R/S) of the molecules below. CI H NH,

(Q107) For what reason is the planar configuration the most stable bonding for ethene? H H. c=C H. A) Tilting of the plane would impede the formation of pi bonds B) Existing in a plane allows rotation of the pi bond C) Tilting of the plane would impede the formation of sigma bonds D) The molecular must remain planar because the carbon atoms are hypervalent E) The planar formation allows the carbon atoms to become sp3-hybridized

A carbon-oxygen double bond (C=O) is (longer/weaker) and (stronger/weaker) than a carbon-carbon double bond (C=C).

What are the correct configurations of carbons 1 and 3 of the compound below, respectively? H CH3 H O IR, 3S O 1S, 3S IR, 3R

CH₂CH₂CH₂CH=CHCH₂ Draw the molecules on the canvas by choosing buttons from the Tools (for bonds), Atoms, and Advanced Template toolbars. The single bond is active by default. H: 2D EXP. CONT I UZ O